<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Bootstrap-体验</title>

    <!-- 引入 Bootstrap 的 CSS 文件 -->
    <link rel="stylesheet" href="./Bootstrap/css/bootstrap.min.css">



</head>
<body>
    <!-- 版心效果 -->
    <div class="container">
        <div class="row">
            <div class="col-lg-3 col-md-6 col-sm-12">
                1
            </div>
            <div class="col-lg-3 col-md-6 col-sm-12">
                1
            </div><div class="col-lg-3 col-md-6 col-sm-12">
                1
            </div><div class="col-lg-3 col-md-6 col-sm-12">
                1
            </div>
        </div>

    </div>
</body>
</html>